Avijit LahiriProfessor Avijit Lahiri obtained his Ph.D. from Calcutta University in 1975. He was engaged in teaching physics and research over a long period of 36 years. He published work in several areas of theoretical physics in international peer reviewed jourals, including those published by Elsevier. He lectured widely on numerous topics in physics and mathematics, both to a general audience and to specialists. For the last fifteen years he devoted himself to book writing and authored five books. Read More Read Less